Pipe-perforating machine



July 12, 1927. E' Q TRAVIS PIPE PERFORATING MACHINE Filed Aue. 27. 1925 lthe;v inside :with

. meaiisthereforif. 1.

Patented n ulvy 712,1` 927. i

'Biani'1i-nitrite.` TRnvIs, or Losj'AiveELEs, cALiFonitrA. i

"' ruin-PERFORMING1-MACH1NE. j

Aiipiication aieaiiugust'aaieza serial 110.659,49?.l i

fiorl boring ,holes through the wall of lsaid Vpipeor-casing from theiinsidejoutwardly lwith -me'ansfor reamingthe innerendsof"l said holes or, Vin other words, maki,ing-holesy 1o ,which are largerin diameter 4.atV fthe "inner- 'surface fof the? pipezthany 4they aref at the outer 4 surfaceV thereof, thus .making certain Y Y that anything starting lthrough'fthe Vholes i from -the outside can ,not clog the hole but k will pass'readily-through the holeand into the .Y pipe orl casingg.: to` provide improved means for driving the ldrill .bit or vboring .l toolfandalsoxfr feeding-it 'toandgfrom the Work; to provideimproved meansy for lubri-y catingytheworking parts; to providea sim' 4Iple, .and'.compact tool or working head, any desired number of :whichy can be-connected together and operatedifroma commondriving shaft anda commonfeed sha t,said tools or. headsibeingL placed together. side by side f on s aid'shaftslike beads onl a stringandv operated: simultaneously as l one machine orr devicehaving a plurality ofboringbits, saidv tools or heads having passagevvaysf:there-H through-which registerwith each other whenv placed together` and Aform continuous v'pas-jf Vsagevv( ays forV lubricantywith feedsvports'to;

the parts needing lubrication in each heady or-tjool; andgffin general, :.to. provide an imi rapidly vperforating.pipeor well easing from perforationsfr tapering .Alform--vi g Inforder willlznowfdescribe.In the drawingsg-.

sectionwith va seriesof! my improved per#l ofthe tools orl heads, showingzthe'interior ']mechanismsffor!drivingiand.'feeding'. the n Y n enlarged, "as" at v atfitsj'lower end.i A,

through ."piii, :19, z is inserted ythroiugh f' said. chuck jinenibe'rai', nearpitsniiddle, atV the upper .endfofjthe sleevefl, 4and against ff YUVFigure' 3 is avfraginentary .cross sectional...

viewA longitudinally :of .the ,operating shafts,

showing one. tool :or yhead andfparts .of two n othersv fat' opposite', sides;l with "jconnecting` proved, practical/and" effcientrmachine foi" to fullygexplain my invention,l I. have illustratedsioney practical'f embodiment; ,thereoion theaccompany'ingsheetofdraw;r` n ings, which t 5. F'gure `Lis :sidei'elevation of vmachine embodying my invention, showingv a pipe'fin'V f Referring'nowmore in detail to the-draw# ings, Irwill v,desc'ribeone tool or head shown for the purpose of illustrating the invention.

Thisfcomprises a vbody member of circular form, designated Land of a Vsize-to pass into a pipe -or casing to be perforated, but in loperation al series oisaid tools .or heads areV secured together for simultaneous ,operationV and the pipe' or casing is telescoped over said tools', inpsubstantia-lly the mannerc indicated in Figfl of the drawings. Said body meme ber is provided Witli'ya central bore or open- Y ing 2, extending vertically therethrough; :A

ydrill bit or perforating tool, 3, is provided,

having the boring end 3, and the reaining portionl, whereby as said drillbit isforc'ed `through :the pipe. or.;v casing l,fromthev inside uramaniier to be described, it-bores' a hole f-ronrthe inside `Ao'utfand then' reams krthe inner end of saidihole in a-manner which will be readily understood v.from f the vdrawings. Said drill bit4 is providedv with a split bushing, Ll, with a'lug or key portion, [5, adapted'to titinto corresponding cavity or key.-seat-,6, infsaidldrill bit. VSaid drill bit Vand: itsbushing are 'inserted into the lowerV endo-fa chuck member 7, said bushing being 'i screwed thereinto andl operating tolock said drill Vbit in place,in themanner indicated in Y Fig. :2. Near itsupper end said chuck member 7 fisprovidedwith av spiral gear, 8, keyed".v

VtheretofA by means'ofa key 9, which' spiral gear, 8,- rmeshes. with a spiralfgear 110, keyed.

as at 10a',v to Va. drive shaft 1l, which extends through any .desired number of tools or.l heads inthe mannerii'idicatedV in Figl.v A Vraclmb ar 112, is secured to' a ,sleeveY 13, ,son saidl chuck member 7,"said'rack:bar12, meshing vwitha 'feed gear14, keyed `to a feed4 shaft igfby a key' 116.

Thrust-balli bearings,- i7 and f 18, yare .vpromember. 7. The, bearingsV 17 opera-te kbetween washerflikejmembers 17a/.and` 17", placedy oi'erv said .chuck-body?, as clearly shown in Fig.' 2,` with arfclosureplug 2, screwed into the Vtop of the` central/bore 2,1 in thebody member I. -The bearings 18 operatebetweenV rwasher-like members'lS and 18", aroundthe lower end oisaidchuckmember 7, whichis which 'theV upper end ofylsaid sleeve 13, and

" videdVt near the opposite ends of theV chuck 'l l' Vsaid. rack .bali-,12,jbear, injorder'to raiseutliev i' ister Withthe other openings and thus form a continuous passageway through the group v of heads for lubricant. From the opening 22, in each head, extends a feed port 22a,

Which leads to the central bore i2, above the bearing rings, 20, 20', for lubricating the spiral gears 8 and 10. F rom the passageway Q3, a supply port leads down to an inserted member 2l, from which is a feed port 24a, for supplying lubricant to the drill bit at the Work end. Said drill bit, 3, is a double ended bit and can be reversed end for end, as willbe understood from the showing. Y

Referring to Fig. 3, what maybe termed internal splice collars Q5 and `2G, are placed oni the feed shaft 15 and` the `driving shaft 11, between the heads, 1,` as tlieyare placed together, thus more effectively interlocking and aligning them together. These align ment collars E25 and 26 are held in place, respectively, byk set screws 25 and 26a.` They also form abutments for the gears 10 and 14 on said shafts. In order to more firmly secure said several heads or tools together, tie rods or bolts, as 27, Q8 and29, are used through said heads.

llllhile I have shown and described one practical embodiment of my invention, I am aware that many `changes can be made in thedetailsof construction and arrangement ashere shown for illustrative purposes without departing from the real spiritof the invention, and I do not, therefore, limit my invention.. to the shoiving `made `except as I may be limited bythe hereto appended claims,

Iclaim: i y i 1. In a pipe perforating machine, a body member of cylindrical form, a drill chuck movably mounted in said body member transversely thereof, a drill bit carried by `said drill chuck, a rotatable drive shaft and a rotatable feed shaftextended through said body memberin parallel relationship to the axis of said body member, gear connections from said drive shaft to said drill chuck'for driving the latter and the drill bit, and gear connections from the feed shaft to said drill' chuck `for moving the latter and said drill bit longitudinally to and from thework.

Q. In a pipe perforating machine, in combination, a plurality of body members of cylindrical form, each of said body members being providedtherein with a drill chuck movable transversely of its axis, a drive each body member, and means for holding it` in said drill chuck to operate therewith.

3. In a. pipe perforatingimachine, ini` combination, a plurality offbodyl members of cylindrical form, each ofisaid body members being provided therein with a drill chuck movable in said body member, a` drill bites-rs.

ried by said drill chuck and adapted to be moved therewith to `project beyondi the edge of said bodyn member, drive shaft andia feed shaft extended in parallel relationship through said body members, and operative connections 1n each body member.fromI said` shafts to said` drill chuckLfor o erating all of said drill chucks simultaneoudly. l

Il. ilv pipe` perforating machine uincluding in` combination a solid` bodyM member adapted to fit within a pipeto` be. perforated; said body having a passageway 'therethrough from one sidle to the` other` and` twobores therethrough from one end.` to i the other,

bit i holding and operating means` i movably? mounted in said passageway, two paralleli shafts through said bieres, gear connectinns from oneof said` `shaftsgto. saidbit holding and operating means for driving said" bit,

gear connections from, ithe other" of. said? shafts forfeed-ing said lengitiniinally.to.` andffrom the side of; thepipe, and meansyin,

said body for directing lubnicant to: said` drill bit.

15,r A pipe, perforating machine includingA in combination a.` plurality ofvdiiferentfbody l members adapted to be placed sdeby sidei Within. a pipe, each.` `offsafidr"biodymembers having a drill bit operatively mounted thereal in transiversely.-` thereof andeach'of Asaid' body members having two, i transverse: boresi pani? d d d d andwlwithr the anisi thereof, two` operating shafts tlirongh. all of allel with `each @then said body members, gearconnectionsfromi one of: said shafts in eaclrbfsaidbody mem` 4 bers for driving saididrillfbit, and gear con.` nections from. the othertoiirsaidl shafts` each off` said body membersl for feeding said" drill bits toi and from thework, substantially as described;

A pipe perforating machine` including in combination a plurality of circular*body@` members` of disc-like forni adapted tobe` placed ilatvvise against `each other'within a pipe, eachi member liarvingfa transverse open?` 111g therethrough from` one.` sidelto the other and each havlng a plurality ofrzbores` there` i l. 1,635,590 e ythrough parallel vvithrthe. axes thereof, la" 'drill bit andY holding andoperating means :inV

each of said transverse openings, `an operatv ingshaft through all offsaid body members, gear connectionsl inv each body member kbetween saidshaftan'd said drill bit, a feed shaft through all ofsaid body members, gear connections in each l'body -member between said feed shaft and said drill bitffor moving `the same longitudin'ally-f` to and from the' Work, and oil feeding means common :to all of said body members for feeding oil tosaid 20 members Yfor simultaneouslyffeeding said v drill holding andoperating members to and drill bitnndsaid gear Vconnections.

7. A pipe perforatin'g mechanism'iwhich includes arpiuraiiiy of individuaiuriii imidan Qperatingshaft likebeads, side byl side, Within a'pipe and fitting Within said pipe,

an operating shaft common to all of said members,` and means common to all of said ing and operating membersfthreaded 'ruponV areplaCed, c

8.A pipe-perforating mechanism,inelud-Vv ing.v a plurality of individual round'dlill ating shafts parallel With each otherand upon' 'Which1 'saidv members are placed one' against the other, one of said shafts having conneciV c ktions for-rotating the drillholding and`oper` atingmembers and the other of said vshaftsV hol-ding' andaoplemtng membersadapted to I. i ,t ,WithinV a pipe to be perforatedvtwo Oper .v

having Connections for moving in opposite v- "directionssaid drill holdingand operating` members for feeding thedrills to andffromy the VWork simultaneously, and means common to alloiv said members Vfor furnishing lubii- I y cant to said drills` and said operating connections.VL

16th day of August, 1923,.

f j BERTRAM C. TRAVIS. y

c inV V,Signed at Los Angeles, California,this 

